1200400034311 has 2 divisors, whose sum is σ = 1200400034312. Its totient is φ = 1200400034310.

The previous prime is 1200400034269. The next prime is 1200400034329. The reversal of 1200400034311 is 1134300040021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200400034311 - 2²⁷ = 1200265816583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200400034011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600200017155 + 600200017156.

It is an arithmetic number, because the mean of its divisors is an integer number (600200017156).

Almost surely, 2^{1200400034311} is an apocalyptic number.

1200400034311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200400034311 is an equidigital number, since it uses as much as digits as its factorization.

1200400034311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1200400034311 its reverse (1134300040021), we get a palindrome (2334700074332).

The spelling of 1200400034311 in words is "one trillion, two hundred billion, four hundred million, thirty-four thousand, three hundred eleven".